1663. KANTOROVICH, B. V. [Effect of Gas Pressure and Concentration on the Length of the Reaction Zone in Heterogeneous Processes.] Doklady Akad. Nauk S.S.S.R., vol. 71, 1950, pp. 315-318; Chem. Abs., vol. 44, 1950, p. 9220.

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Literature Abstracts

Mathematical equations are derived for several reaction conditions involving layers of solid particles or materials suspended in flames of reacting gases. Conclusions are: (1) For first-order reaction in a layer of solid particles, χ, the length of the reaction zone, is independent of pressure in the kinetic region but directly proportional to pressure in the diffusion region; in either region, χ is independent of the relative weight concentration of gas. (2) For first-order reaction in a stream of powdered material, χ is inversely proportional to pressure in the kinetic region but independent of pressure in the diffusion region; in either region, χ is inversely proportional to the relative weight concentration of reactive gas. (3) In reactions accompanied by a volume increase occurring in a layer of solid particles, χ is independent of pressure in the kinetic region but is directly proportional to pressure in the diffusion region; χ increases with increasing initial volume concentration. (4) In reactions accompanied by a volume increase occurring in a stream of powdered material, χ is inversely proportional to pressure in the Kinetic region but independent of pressure in the Kinetic region but independent of pressure in the diffusion region; χ decreases with increasing initial volume concentration.

KAPPELMACHER, R. See abs. 2620a.